As far as I know, when I use Electrum I'm just choosing servers to trust that hold the blockchain.
But in this recently published article I read this about Multibit:
It uses a slightly weaker trust model than Bitcoin-Qt. In SPV mode, with clients like Multibit and Hive, it still scans the blockchain, and what it assumes is whatever blockchain has the majority of miners on it [is correct]. Instead of verifying the entire contents, it just trusts that the majority of miners are honest. It's still peer to peer.
Does this mean that Multibit's SPV implementation is more "P2P" than Electrum? Does it connect to peers (other thin-client users) instead of servers?